Hi Guys, Which of the following cat-backs are the best over the stock H-pipe
Magnaflow, Steeda or SLP. I need information about the sound, which of them having best sound from both outside and inside the car because I don’t like very load sound… regards

 

Ive never heard slp on a stang. They sound nice on a ls1 though. My friend had the magnaflows on his 97 gt with a bassani catback. Sounded pretty mean.

 

If you want the best performance without alot of sound, go with Mac Prochamber, better gains than an h or x but (depends on what you want if its a but) its quieter than both. You can see my mods in my sig, my exhaust is no louder than stock ad idle (is alot deeper though), and on the inside sounds like stock unless I give it full throttle. It always sounds loud as hell on the outside except at idle.

 

yeah SLP ...finally started making them for the 'stang since the z-28 is no more I say who needs them where were they earlier ..I'd spend my hard earned $$$ some where else. support the other makers who have been with us since the begining

 

Give me your email address and I'll send you my Magnaflow clips from inside the car with the windows up & down.